Perhaps you should try some spelling variations:
irrigation schemes » irrigation scheme, irrigation systems
training services » planning services, banking services
canal irrigation » scale irrigation
china training » using training, ca training, china liaoning
supply china » supply chains, supply chain
supply canal » supply canada, supply annual, supply case

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (( supply china training services. ) or ( supply canal irrigation schemes. ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( supply china training services. ) OR ( supply canal irrigation schemes. )).
• Adding a wildcard symbol may retrieve word variants: (( supply china training services. ) or ( supply canal irrigation schemes. ))*.